- Alphabets1
- Ambrosian rite (Catholic Church)1
- Andrew, Apostle, Saint1
- Angulo family1
- Angulo, Alonso de1
- Anselm, Saint, Archbishop of Canterbury, 1033-11091
- Anthony, of Padua, Saint, 1195-12311
- Anti-Catholicism1
- Anticlaudianus (Alanus, de Insulis)1
- Antonio Magistri1
- Antonius, de Parma, active 1310-13231
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- Arabic alphabet--Religious aspects--Islam1
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- Arabic language--Synonyms and antonyms1
- Arabic literature1
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- Ardabīlī, Aḥmad ibn Muḥammad, -1585. Majmaʻ al-fāʼidah wa-al-burhān fī sharḥ Irshād al-adhhān1
- Arianism1